How can I disable these warnings? [WARNING]: Removed restricted key from module data

Recently updated to Ansible 2.5 and most of our scripts are spitting out these warnings:

TASK [basic-config : include_vars] ***********************************************************************************************************************************************************
[WARNING]: Removed restricted key from module data: ansible_become_pass = REDACTED

They seem related to issues 38667 and 37535.

I’m not particularly annoyned by warning messages in general, but this one is clearly exposing sensitive information.

Anyway I can disable these warnings?